diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-12 13:30:06 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-12 13:30:06 -0700 |
commit | 52269718dc2cf2585d7a2828f31d46ef46e68000 (patch) | |
tree | 9815c6cbaa8c2e3247b6356725c150831dfd4d4e | |
parent | ae71948f398eb2572148006bf34f0c6d934206cb (diff) | |
parent | d35b0996fef3bfe76665e87bbff7d95c6807350a (diff) | |
download | linux-52269718dc2cf2585d7a2828f31d46ef46e68000.tar.gz linux-52269718dc2cf2585d7a2828f31d46ef46e68000.tar.bz2 linux-52269718dc2cf2585d7a2828f31d46ef46e68000.zip |
Merge tag 'dma-mapping-4.14' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping updates from Christoph Hellwig:
- removal of the old dma_alloc_noncoherent interface
- remove unused flags to dma_declare_coherent_memory
- restrict OF DMA configuration to specific physical busses
- use the iommu mailing list for dma-mapping questions and patches
* tag 'dma-mapping-4.14' of git://git.infradead.org/users/hch/dma-mapping:
dma-coherent: fix dma_declare_coherent_memory() logic error
ARM: imx: mx31moboard: Remove unused 'dma' variable
dma-coherent: remove an unused variable
MAINTAINERS: use the iommu list for the dma-mapping subsystem
dma-coherent: remove the DMA_MEMORY_MAP and DMA_MEMORY_IO flags
dma-coherent: remove the DMA_MEMORY_INCLUDES_CHILDREN flag
of: restrict DMA configuration
dma-mapping: remove dma_alloc_noncoherent and dma_free_noncoherent
i825xx: switch to switch to dma_alloc_attrs
au1000_eth: switch to dma_alloc_attrs
sgiseeq: switch to dma_alloc_attrs
dma-mapping: reduce dma_mapping_error inline bloat
-rw-r--r-- | Documentation/DMA-API.txt | 55 | ||||
-rw-r--r-- | MAINTAINERS | 2 | ||||
-rw-r--r-- | arch/arm/mach-imx/mach-imx27_visstrim_m10.c | 44 | ||||
-rw-r--r-- | arch/arm/mach-imx/mach-mx31moboard.c | 12 | ||||
-rw-r--r-- | arch/metag/include/asm/dma-mapping.h | 2 | ||||
-rw-r--r-- | arch/nios2/include/asm/dma-mapping.h | 2 | ||||
-rw-r--r-- | arch/sh/drivers/pci/fixups-dreamcast.c | 3 | ||||
-rw-r--r-- | arch/tile/include/asm/dma-mapping.h | 4 | ||||
-rw-r--r-- | drivers/base/dma-coherent.c | 85 | ||||
-rw-r--r-- | drivers/base/dma-mapping.c | 7 | ||||
-rw-r--r-- | drivers/char/virtio_console.c | 3 | ||||
-rw-r--r-- | drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c | 5 | ||||
-rw-r--r-- | drivers/net/ethernet/amd/au1000_eth.c | 18 | ||||
-rw-r--r-- | drivers/net/ethernet/i825xx/lasi_82596.c | 6 | ||||
-rw-r--r-- | drivers/net/ethernet/i825xx/lib82596.c | 9 | ||||
-rw-r--r-- | drivers/net/ethernet/i825xx/sni_82596.c | 6 | ||||
-rw-r--r-- | drivers/net/ethernet/seeq/sgiseeq.c | 8 | ||||
-rw-r--r-- | drivers/of/device.c | 48 | ||||
-rw-r--r-- | drivers/scsi/NCR_Q720.c | 3 | ||||
-rw-r--r-- | drivers/usb/host/ohci-sm501.c | 7 | ||||
-rw-r--r-- | drivers/usb/host/ohci-tmio.c | 9 | ||||
-rw-r--r-- | include/linux/dma-mapping.h | 28 |
22 files changed, 156 insertions, 210 deletions
diff --git a/Documentation/DMA-API.txt b/Documentation/DMA-API.txt index 45b29326d719..ac66ae2509a9 100644 --- a/Documentation/DMA-API.txt +++ b/Documentation/DMA-API.txt @@ -515,14 +515,15 @@ API at all. :: void * - dma_alloc_noncoherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag) + dma_alloc_attrs(struct device *dev, size_t size, dma_addr_t *dma_handle, + gfp_t flag, unsigned long attrs) -Identical to dma_alloc_coherent() except that the platform will -choose to return either consistent or non-consistent memory as it sees -fit. By using this API, you are guaranteeing to the platform that you -have all the correct and necessary sync points for this memory in the -driver should it choose to return non-consistent memory. +Identical to dma_alloc_coherent() except that when the +DMA_ATTR_NON_CONSISTENT flags is passed in the attrs argument, the +platform will choose to return either consistent or non-consistent memory +as it sees fit. By using this API, you are guaranteeing to the platform +that you have all the correct and necessary sync points for this memory +in the driver should it choose to return non-consistent memory. Note: where the platform can return consistent memory, it will guarantee that the sync points become nops. @@ -535,12 +536,13 @@ that simply cannot make consistent memory. :: void - dma_free_noncoherent(struct device *dev, size_t size, void *cpu_addr, - dma_addr_t dma_handle) + dma_free_attrs(struct device *dev, size_t size, void *cpu_addr, + dma_addr_t dma_handle, unsigned long attrs) -Free memory allocated by the nonconsistent API. All parameters must -be identical to those passed in (and returned by -dma_alloc_noncoherent()). +Free memory allocated by the dma_alloc_attrs(). All parameters common +parameters must identical to those otherwise passed to dma_fre_coherent, +and the attrs argument must be identical to the attrs passed to +dma_alloc_attrs(). :: @@ -564,8 +566,8 @@ memory or doing partial flushes. dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction direction) -Do a partial sync of memory that was allocated by -dma_alloc_noncoherent(), starting at virtual address vaddr and +Do a partial sync of memory that was allocated by dma_alloc_attrs() with +the DMA_ATTR_NON_CONSISTENT flag starting at virtual address vaddr and continuing on for size. Again, you *must* observe the cache line boundaries when doing this. @@ -590,34 +592,11 @@ size is the size of the area (must be multiples of PAGE_SIZE). flags can be ORed together and are: -- DMA_MEMORY_MAP - request that the memory returned from - dma_alloc_coherent() be directly writable. - -- DMA_MEMORY_IO - request that the memory returned from - dma_alloc_coherent() be addressable using read()/write()/memcpy_toio() etc. - -One or both of these flags must be present. - -- DMA_MEMORY_INCLUDES_CHILDREN - make the declared memory be allocated by - dma_alloc_coherent of any child devices of this one (for memory residing - on a bridge). - - DMA_MEMORY_EXCLUSIVE - only allocate memory from the declared regions. Do not allow dma_alloc_coherent() to fall back to system memory when it's out of memory in the declared region. -The return value will be either DMA_MEMORY_MAP or DMA_MEMORY_IO and -must correspond to a passed in flag (i.e. no returning DMA_MEMORY_IO -if only DMA_MEMORY_MAP were passed in) for success or zero for -failure. - -Note, for DMA_MEMORY_IO returns, all subsequent memory returned by -dma_alloc_coherent() may no longer be accessed directly, but instead -must be accessed using the correct bus functions. If your driver -isn't prepared to handle this contingency, it should not specify -DMA_MEMORY_IO in the input flags. - -As a simplification for the platforms, only **one** such region of +As a simplification for the platforms, only *one* such region of memory may be declared per device. For reasons of efficiency, most platforms choose to track the declared diff --git a/MAINTAINERS b/MAINTAINERS index e57a4eaec077..f46a3225e398 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4219,7 +4219,7 @@ DMA MAPPING HELPERS M: Christoph Hellwig <hch@lst.de> M: Marek Szyprowski <m.szyprowski@samsung.com> R: Robin Murphy <robin.murphy@arm.com> -L: linux-kernel@vger.kernel.org +L: iommu@lists.linux-foundation.org T: git git://git.infradead.org/users/hch/dma-mapping.git W: http://git.infradead.org/users/hch/dma-mapping.git S: Supported diff --git a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c index dd75a4756761..5169dfba9718 100644 --- a/arch/arm/mach-imx/mach-imx27_visstrim_m10.c +++ b/arch/arm/mach-imx/mach-imx27_visstrim_m10.c @@ -245,7 +245,6 @@ static phys_addr_t mx2_camera_base __initdata; static void __init visstrim_analog_camera_init(void) { struct platform_device *pdev; - int dma; gpio_set_value(TVP5150_PWDN, 1); ndelay(1); @@ -258,12 +257,9 @@ static void __init visstrim_analog_camera_init(void) if (IS_ERR(pdev)) return; - dma = dma_declare_coherent_memory(&pdev->dev, - mx2_camera_base, mx2_camera_base, - MX2_CAMERA_BUF_SIZE, - DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE); - if (!(dma & DMA_MEMORY_MAP)) - return; + dma_declare_coherent_memory(&pdev->dev, mx2_camera_base, + mx2_camera_base, MX2_CAMERA_BUF_SIZE, + DMA_MEMORY_EXCLUSIVE); } static void __init visstrim_reserve(void) @@ -444,16 +440,13 @@ static const struct imx_ssi_platform_data visstrim_m10_ssi_pdata __initconst = { static void __init visstrim_coda_init(void) { struct platform_device *pdev; - int dma; pdev = imx27_add_coda(); - dma = dma_declare_coherent_memory(&pdev->dev, - mx2_camera_base + MX2_CAMERA_BUF_SIZE, - mx2_camera_base + MX2_CAMERA_BUF_SIZE, - MX2_CAMERA_BUF_SIZE, - DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE); - if (!(dma & DMA_MEMORY_MAP)) - return; + dma_declare_coherent_memory(&pdev->dev, + mx2_camera_base + MX2_CAMERA_BUF_SIZE, + mx2_camera_base + MX2_CAMERA_BUF_SIZE, + MX2_CAMERA_BUF_SIZE, + DMA_MEMORY_EXCLUSIVE); } /* DMA deinterlace */ @@ -466,24 +459,21 @@ static void __init visstrim_deinterlace_init(void) { int ret = -ENOMEM; struct platform_device *pdev = &visstrim_deinterlace; - int dma; ret = platform_device_register(pdev); - dma = dma_declare_coherent_memory(&pdev->dev, - mx2_camera_base + 2 * MX2_CAMERA_BUF_SIZE, - mx2_camera_base + 2 * MX2_CAMERA_BUF_SIZE, - MX2_CAMERA_BUF_SIZE, - DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE); - if (!(dma & DMA_MEMORY_MAP)) - return; + dma_declare_coherent_memory(&pdev->dev, + mx2_camera_base + 2 * MX2_CAMERA_BUF_SIZE, + mx2_camera_base + 2 * MX2_CAMERA_BUF_SIZE, + MX2_CAMERA_BUF_SIZE, + DMA_MEMORY_EXCLUSIVE); } /* Emma-PrP for format conversion */ static void __init visstrim_emmaprp_init(void) { struct platform_device *pdev; - int dma; + int ret; pdev = imx27_add_mx2_emmaprp(); if (IS_ERR(pdev)) @@ -493,11 +483,11 @@ static void __init visstrim_emmaprp_init(void) * Use the same memory area as the analog camera since both * devices are, by nature, exclusive. */ - dma = dma_declare_coherent_memory(&pdev->dev, + ret = dma_declare_coherent_memory(&pdev->dev, mx2_camera_base, mx2_camera_base, MX2_CAMERA_BUF_SIZE, - DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE); - if (!(dma & DMA_MEMORY_MAP)) + DMA_MEMORY_EXCLUSIVE); + if (ret) pr_err("Failed to declare memory for emmaprp\n"); } diff --git a/arch/arm/mach-imx/mach-mx31moboard.c b/arch/arm/mach-imx/mach-mx31moboard.c index bde9a9af6714..7716f83aecdd 100644 --- a/arch/arm/mach-imx/mach-mx31moboard.c +++ b/arch/arm/mach-imx/mach-mx31moboard.c @@ -475,7 +475,7 @@ static phys_addr_t mx3_camera_base __initdata; static int __init mx31moboard_init_cam(void) { - int dma, ret = -ENOMEM; + int ret; struct platform_device *pdev; imx31_add_ipu_core(); @@ -484,11 +484,11 @@ static int __init mx31moboard_init_cam(void) if (IS_ERR(pdev)) return PTR_ERR(pdev); - dma = dma_declare_coherent_memory(&pdev->dev, - mx3_camera_base, mx3_camera_base, - MX3_CAMERA_BUF_SIZE, - DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE); - if (!(dma & DMA_MEMORY_MAP)) + ret = dma_declare_coherent_memory(&pdev->dev, + mx3_camera_base, mx3_camera_base, + MX3_CAMERA_BUF_SIZE, + DMA_MEMORY_EXCLUSIVE); + if (ret) goto err; ret = platform_device_add(pdev); diff --git a/arch/metag/include/asm/dma-mapping.h b/arch/metag/include/asm/dma-mapping.h index fad3dc3cb210..ea573be2b6d0 100644 --- a/arch/metag/include/asm/dma-mapping.h +++ b/arch/metag/include/asm/dma-mapping.h @@ -9,7 +9,7 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) } /* - * dma_alloc_noncoherent() returns non-cacheable memory, so there's no need to + * dma_alloc_attrs() always returns non-cacheable memory, so there's no need to * do any flushing here. */ static inline void diff --git a/arch/nios2/include/asm/dma-mapping.h b/arch/nios2/include/asm/dma-mapping.h index 7b3c6f280293..f8dc62222741 100644 --- a/arch/nios2/include/asm/dma-mapping.h +++ b/arch/nios2/include/asm/dma-mapping.h @@ -18,7 +18,7 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) } /* - * dma_alloc_noncoherent() returns non-cacheable memory, so there's no need to + * dma_alloc_attrs() always returns non-cacheable memory, so there's no need to * do any flushing here. */ static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, diff --git a/arch/sh/drivers/pci/fixups-dreamcast.c b/arch/sh/drivers/pci/fixups-dreamcast.c index 9d597f7ab8dd..48aaefd8f5d6 100644 --- a/arch/sh/drivers/pci/fixups-dreamcast.c +++ b/arch/sh/drivers/pci/fixups-dreamcast.c @@ -63,11 +63,10 @@ static void gapspci_fixup_resources(struct pci_dev *dev) res.end = GAPSPCI_DMA_BASE + GAPSPCI_DMA_SIZE - 1; res.flags = IORESOURCE_MEM; pcibios_resource_to_bus(dev->bus, ®ion, &res); - BUG_ON(!dma_declare_coherent_memory(&dev->dev, + BUG_ON(dma_declare_coherent_memory(&dev->dev, res.start, region.start, resource_size(&res), - DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE)); break; default: diff --git a/arch/tile/include/asm/dma-mapping.h b/arch/tile/include/asm/dma-mapping.h index bbc71a29b2c6..7061dc8af43a 100644 --- a/arch/tile/include/asm/dma-mapping.h +++ b/arch/tile/include/asm/dma-mapping.h @@ -68,8 +68,8 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) int dma_set_mask(struct device *dev, u64 mask); /* - * dma_alloc_noncoherent() is #defined to return coherent memory, - * so there's no need to do any flushing here. + * dma_alloc_attrs() always returns non-cacheable memory, so there's no need to + * do any flushing here. */ static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction direction) diff --git a/drivers/base/dma-coherent.c b/drivers/base/dma-coherent.c index 1c152aed6b82..a39b2166b145 100644 --- a/drivers/base/dma-coherent.c +++ b/drivers/base/dma-coherent.c @@ -37,7 +37,7 @@ static inline dma_addr_t dma_get_device_base(struct device *dev, return mem->device_base; } -static bool dma_init_coherent_memory( +static int dma_init_coherent_memory( phys_addr_t phys_addr, dma_addr_t device_addr, size_t size, int flags, struct dma_coherent_mem **mem) { @@ -45,25 +45,28 @@ static bool dma_init_coherent_memory( void __iomem *mem_base = NULL; int pages = size >> PAGE_SHIFT; int bitmap_size = BITS_TO_LONGS(pages) * sizeof(long); + int ret; - if ((flags & (DMA_MEMORY_MAP | DMA_MEMORY_IO)) == 0) - goto out; - if (!size) + if (!size) { + ret = -EINVAL; goto out; + } - if (flags & DMA_MEMORY_MAP) - mem_base = memremap(phys_addr, size, MEMREMAP_WC); - else - mem_base = ioremap(phys_addr, size); - if (!mem_base) + mem_base = memremap(phys_addr, size, MEMREMAP_WC); + if (!mem_base) { + ret = -EINVAL; goto out; - + } dma_mem = kzalloc(sizeof(struct dma_coherent_mem), GFP_KERNEL); - if (!dma_mem) + if (!dma_mem) { + ret = -ENOMEM; goto out; + } dma_mem->bitmap = kzalloc(bitmap_size, GFP_KERNEL); - if (!dma_mem->bitmap) + if (!dma_mem->bitmap) { + ret = -ENOMEM; goto out; + } dma_mem->virt_base = mem_base; dma_mem->device_base = device_addr; @@ -73,17 +76,13 @@ static bool dma_init_coherent_memory( spin_lock_init(&dma_mem->spinlock); *mem = dma_mem; - return true; + return 0; out: kfree(dma_mem); - if (mem_base) { - if (flags & DMA_MEMORY_MAP) - memunmap(mem_base); - else - iounmap(mem_base); - } - return false; + if (mem_base) + memunmap(mem_base); + return ret; } static void dma_release_coherent_memory(struct dma_coherent_mem *mem) @@ -91,10 +90,7 @@ static void dma_release_coherent_memory(struct dma_coherent_mem *mem) if (!mem) return; - if (mem->flags & DMA_MEMORY_MAP) - memunmap(mem->virt_base); - else - iounmap(mem->virt_base); + memunmap(mem->virt_base); kfree(mem->bitmap); kfree(mem); } @@ -109,8 +105,6 @@ static int dma_assign_coherent_memory(struct device *dev, return -EBUSY; dev->dma_mem = mem; - /* FIXME: this routine just ignores DMA_MEMORY_INCLUDES_CHILDREN */ - return 0; } @@ -118,16 +112,16 @@ int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr, dma_addr_t device_addr, size_t size, int flags) { struct dma_coherent_mem *mem; + int ret; - if (!dma_init_coherent_memory(phys_addr, device_addr, size, flags, - &mem)) - return 0; - - if (dma_assign_coherent_memory(dev, mem) == 0) - return flags & DMA_MEMORY_MAP ? DMA_MEMORY_MAP : DMA_MEMORY_IO; + ret = dma_init_coherent_memory(phys_addr, device_addr, size, flags, &mem); + if (ret) + return ret; - dma_release_coherent_memory(mem); - return 0; + ret = dma_assign_coherent_memory(dev, mem); + if (ret) + dma_release_coherent_memory(mem); + return ret; } EXPORT_SYMBOL(dma_declare_coherent_memory); @@ -171,7 +165,6 @@ static void *__dma_alloc_from_coherent(struct dma_coherent_mem *mem, int order = get_order(size); unsigned long flags; int pageno; - int dma_memory_map; void *ret; spin_lock_irqsave(&mem->spinlock, flags); @@ -188,15 +181,9 @@ static void *__dma_alloc_from_coherent(struct dma_coherent_mem *mem, */ *dma_handle = mem->device_base + (pageno << PAGE_SHIFT); ret = mem->virt_base + (pageno << PAGE_SHIFT); - dma_memory_map = (mem->flags & DMA_MEMORY_MAP); spin_unlock_irqrestore(&mem->spinlock, flags); - if (dma_memory_map) - memset(ret, 0, size); - else - memset_io(ret, 0, size); - + memset(ret, 0, size); return ret; - err: spin_unlock_irqrestore(&mem->spinlock, flags); return NULL; @@ -359,14 +346,18 @@ static struct reserved_mem *dma_reserved_default_memory __initdata; static int rmem_dma_device_init(struct reserved_mem *rmem, struct device *dev) { struct dma_coherent_mem *mem = rmem->priv; + int ret; - if (!mem && - !dma_init_coherent_memory(rmem->base, rmem->base, rmem->size, - DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE, - &mem)) { + if (!mem) + return -ENODEV; + + ret = dma_init_coherent_memory(rmem->base, rmem->base, rmem->size, + DMA_MEMORY_EXCLUSIVE, &mem); + + if (ret) { pr_err("Reserved memory: failed to init DMA memory pool at %pa, size %ld MiB\n", &rmem->base, (unsigned long)rmem->size / SZ_1M); - return -ENODEV; + return ret; } mem->use_dev_dma_pfn_offset = true; rmem->priv = mem; diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c index b555ff9dd8fc..e584eddef0a7 100644 --- a/drivers/base/dma-mapping.c +++ b/drivers/base/dma-mapping.c @@ -176,13 +176,10 @@ int dmam_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr, rc = dma_declare_coherent_memory(dev, phys_addr, device_addr, size, flags); - if (rc) { + if (!rc) devres_add(dev, res); - rc = 0; - } else { + else devres_free(res); - rc = -ENOMEM; - } return rc; } diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index 23f33f95d4a6..d1aed2513bd9 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -451,9 +451,6 @@ static struct port_buffer *alloc_buf(struct virtqueue *vq, size_t buf_size, * device is created by remoteproc, the DMA memory is * associated with the grandparent device: * vdev => rproc => platform-dev. - * The code here would have been less quirky if - * DMA_MEMORY_INCLUDES_CHILDREN had been supported - * in dma-coherent.c */ if (!vq->vdev->dev.parent || !vq->vdev->dev.parent->parent) goto free_buf; diff --git a/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c b/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c index 96dc01750bc0..36762ec954e7 100644 --- a/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c +++ b/drivers/media/platform/soc_camera/sh_mobile_ceu_camera.c @@ -1708,11 +1708,10 @@ static int sh_mobile_ceu_probe(struct platform_device *pdev) err = dma_declare_coherent_memory(&pdev->dev, res->start, res->start, resource_size(res), - DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE); - if (!err) { + if (err) { dev_err(&pdev->dev, "Unable to declare CEU memory.\n"); - return -ENXIO; + return err; } pcdev->video_limit = resource_size(res); diff --git a/drivers/net/ethernet/amd/au1000_eth.c b/drivers/net/ethernet/amd/au1000_eth.c index a3c90fe5de00..73ca8879ada7 100644 --- a/drivers/net/ethernet/amd/au1000_eth.c +++ b/drivers/net/ethernet/amd/au1000_eth.c @@ -1180,9 +1180,10 @@ static int au1000_probe(struct platform_device *pdev) /* Allocate the data buffers * Snooping works fine with eth on all au1xxx */ - aup->vaddr = (u32)dma_alloc_noncoherent(NULL, MAX_BUF_SIZE * - (NUM_TX_BUFFS + NUM_RX_BUFFS), - &aup->dma_addr, 0); + aup->vaddr = (u32)dma_alloc_attrs(NULL, MAX_BUF_SIZE * + (NUM_TX_BUFFS + NUM_RX_BUFFS), + &aup->dma_addr, 0, + DMA_ATTR_NON_CONSISTENT); if (!aup->vaddr) { dev_err(&pdev->dev, "failed to allocate data buffers\n"); err = -ENOMEM; @@ -1361,8 +1362,9 @@ err_remap3: err_remap2: iounmap(aup->mac); err_remap1: - dma_free_noncoherent(NULL, MAX_BUF_SIZE * (NUM_TX_BUFFS + NUM_RX_BUFFS), - (void *)aup->vaddr, aup->dma_addr); + dma_free_attrs(NULL, MAX_BUF_SIZE * (NUM_TX_BUFFS + NUM_RX_BUFFS), + (void *)aup->vaddr, aup->dma_addr, + DMA_ATTR_NON_CONSISTENT); err_vaddr: free_netdev(dev); err_alloc: @@ -1394,9 +1396,9 @@ static int au1000_remove(struct platform_device *pdev) if (aup->tx_db_inuse[i]) au1000_ReleaseDB(aup, aup->tx_db_inuse[i]); - dma_free_noncoherent(NULL, MAX_BUF_SIZE * - (NUM_TX_BUFFS + NUM_RX_BUFFS), - (void *)aup->vaddr, aup->dma_addr); + dma_free_attrs(NULL, MAX_BUF_SIZE * (NUM_TX_BUFFS + NUM_RX_BUFFS), + (void *)aup->vaddr, aup->dma_addr, + DMA_ATTR_NON_CONSISTENT); iounmap(aup->macdma); iounmap(aup->mac); diff --git a/drivers/net/ethernet/i825xx/lasi_82596.c b/drivers/net/ethernet/i825xx/lasi_82596.c index aa22e108f09b..b69c622ba8b2 100644 --- a/drivers/net/ethernet/i825xx/lasi_82596.c +++ b/drivers/net/ethernet/i825xx/lasi_82596.c @@ -96,8 +96,6 @@ #define OPT_SWAP_PORT 0x0001 /* Need to wordswp on the MPU port */ -#define DMA_ALLOC dma_alloc_noncoherent -#define DMA_FREE dma_free_noncoherent #define DMA_WBACK(ndev, addr, len) \ do { dma_cache_sync((ndev)->dev.parent, (void *)addr, len, DMA_TO_DEVICE); } while (0) @@ -200,8 +198,8 @@ static int __exit lan_remove_chip(struct parisc_device *pdev) struct i596_private *lp = netdev_priv(dev); unregister_netdev (dev); - DMA_FREE(&pdev->dev, sizeof(struct i596_private), - (void *)lp->dma, lp->dma_addr); + dma_free_attrs(&pdev->dev, sizeof(struct i596_private), lp->dma, + lp->dma_addr, DMA_ATTR_NON_CONSISTENT); free_netdev (dev); return 0; } diff --git a/drivers/net/ethernet/i825xx/lib82596.c b/drivers/net/ethernet/i825xx/lib82596.c index 8449c58f01fd..f00a1dc2128c 100644 --- a/drivers/net/ethernet/i825xx/lib82596.c +++ b/drivers/net/ethernet/i825xx/lib82596.c @@ -1063,8 +1063,9 @@ static int i82596_probe(struct net_device *dev) if (!dev->base_addr || !dev->irq) return -ENODEV; - dma = (struct i596_dma *) DMA_ALLOC(dev->dev.parent, - sizeof(struct i596_dma), &lp->dma_addr, GFP_KERNEL); + dma = dma_alloc_attrs(dev->dev.parent, sizeof(struct i596_dma), + &lp->dma_addr, GFP_KERNEL, + DMA_ATTR_NON_CONSISTENT); if (!dma) { printk(KERN_ERR "%s: Couldn't get shared memory\n", __FILE__); return -ENOMEM; @@ -1085,8 +1086,8 @@ static int i82596_probe(struct net_device *dev) i = register_netdev(dev); if (i) { - DMA_FREE(dev->dev.parent, sizeof(struct i596_dma), - (void *)dma, lp->dma_addr); + dma_free_attrs(dev->dev.parent, sizeof(struct i596_dma), + dma, lp->dma_addr, DMA_ATTR_NON_CONSISTENT); return i; } diff --git a/drivers/net/ethernet/i825xx/sni_82596.c b/drivers/net/ethernet/i825xx/sni_82596.c index 2af7f77345fb..b2c04a789744 100644 --- a/drivers/net/ethernet/i825xx/sni_82596.c +++ b/drivers/net/ethernet/i825xx/sni_82596.c @@ -23,8 +23,6 @@ static const char sni_82596_string[] = "snirm_82596"; -#define DMA_ALLOC dma_alloc_coherent -#define DMA_FREE dma_free_coherent #define DMA_WBACK(priv, addr, len) do { } while (0) #define DMA_INV(priv, addr, len) do { } while (0) #define DMA_WBACK_INV(priv, addr, len) do { } while (0) @@ -152,8 +150,8 @@ static int sni_82596_driver_remove(struct platform_device *pdev) struct i596_private *lp = netdev_priv(dev); unregister_netdev(dev); - DMA_FREE(dev->dev.parent, sizeof(struct i596_private), - lp->dma, lp->dma_addr); + dma_free_attrs(dev->dev.parent, sizeof(struct i596_private), lp->dma, + lp->dma_addr, DMA_ATTR_NON_CONSISTENT); iounmap(lp->ca); iounmap(lp->mpu_port); free_netdev (dev); diff --git a/drivers/net/ethernet/seeq/sgiseeq.c b/drivers/net/ethernet/seeq/sgiseeq.c index 70347720fdf9..573691bc3b71 100644 --- a/drivers/net/ethernet/seeq/sgiseeq.c +++ b/drivers/net/ethernet/seeq/sgiseeq.c @@ -737,8 +737,8 @@ static int sgiseeq_probe(struct platform_device *pdev) sp = netdev_priv(dev); /* Make private data page aligned */ - sr = dma_alloc_noncoherent(&pdev->dev, sizeof(*sp->srings), - &sp->srings_dma, GFP_KERNEL); + sr = dma_alloc_attrs(&pdev->dev, sizeof(*sp->srings), &sp->srings_dma, + GFP_KERNEL, DMA_ATTR_NON_CONSISTENT); if (!sr) { printk(KERN_ERR "Sgiseeq: Page alloc failed, aborting.\n"); err = -ENOMEM; @@ -813,8 +813,8 @@ static int sgiseeq_remove(struct platform_device *pdev) struct sgiseeq_private *sp = netdev_priv(dev); unregister_netdev(dev); - dma_free_noncoherent(&pdev->dev, sizeof(*sp->srings), sp->srings, - sp->srings_dma); + dma_free_attrs(&pdev->dev, sizeof(*sp->srings), sp->srings, + sp->srings_dma, DMA_ATTR_NON_CONSISTENT); free_netdev(dev); return 0; diff --git a/drivers/of/device.c b/drivers/of/device.c index 17b66e9715d2..64b710265d39 100644 --- a/drivers/of/device.c +++ b/drivers/of/device.c @@ -9,6 +9,9 @@ #include <linux/module.h> #include <linux/mod_devicetable.h> #include <linux/slab.h> +#include <linux/pci.h> +#include <linux/platform_device.h> +#include <linux/amba/bus.h> #include <asm/errno.h> #include "of_private.h" @@ -84,31 +87,28 @@ int of_device_add(struct platform_device *ofdev) */ int of_dma_configure(struct device *dev, struct device_node *np) { - u64 dma_addr, paddr, size; + u64 dma_addr, paddr, size = 0; int ret; bool coherent; unsigned long offset; const struct iommu_ops *iommu; u64 mask; - /* - * Set default coherent_dma_mask to 32 bit. Drivers are expected to - * setup the correct supported mask. - */ - if (!dev->coherent_dma_mask) - dev->coherent_dma_mask = DMA_BIT_MASK(32); - - /* - * Set it to coherent_dma_mask by default if the architecture - * code has not set it. - */ - if (!dev->dma_mask) - dev->dma_mask = &dev->coherent_dma_mask; - ret = of_dma_get_range(np, &dma_addr, &paddr, &size); if (ret < 0) { + /* + * For legacy reasons, we have to assume some devices need + * DMA configuration regardless of whether "dma-ranges" is + * correctly specified or not. + */ + if (!dev_is_pci(dev) && +#ifdef CONFIG_ARM_AMBA + dev->bus != &amba_bustype && +#endif + dev->bus != &platform_bus_type) + return ret == -ENODEV ? 0 : ret; + dma_addr = offset = 0; - size = max(dev->coherent_dma_mask, dev->coherent_dma_mask + 1); } else { offset = PFN_DOWN(paddr - dma_addr); @@ -129,6 +129,22 @@ int of_dma_configure(struct device *dev, struct device_node *np) dev_dbg(dev, "dma_pfn_offset(%#08lx)\n", offset); } + /* + * Set default coherent_dma_mask to 32 bit. Drivers are expected to + * setup the correct supported mask. + */ + if (!dev->coherent_dma_mask) + dev->coherent_dma_mask = DMA_BIT_MASK(32); + /* + * Set it to coherent_dma_mask by default if the architecture + * code has not set it. + */ + if (!dev->dma_mask) + dev->dma_mask = &dev->coherent_dma_mask; + + if (!size) + size = max(dev->coherent_dma_mask, dev->coherent_dma_mask + 1); + dev->dma_pfn_offset = offset; /* diff --git a/drivers/scsi/NCR_Q720.c b/drivers/scsi/NCR_Q720.c index 05835bf1bf9c..54e7d26908ee 100644 --- a/drivers/scsi/NCR_Q720.c +++ b/drivers/scsi/NCR_Q720.c @@ -217,8 +217,7 @@ NCR_Q720_probe(struct device *dev) } if (dma_declare_coherent_memory(dev, base_addr, base_addr, - mem_size, DMA_MEMORY_MAP) - != DMA_MEMORY_MAP) { + mem_size, 0)) { printk(KERN_ERR "NCR_Q720: DMA declare memory failed\n"); goto out_release_region; } diff --git a/drivers/usb/host/ohci-sm501.c b/drivers/usb/host/ohci-sm501.c index a8b8d8b8d9f3..d4e0f7cd96fa 100644 --- a/drivers/usb/host/ohci-sm501.c +++ b/drivers/usb/host/ohci-sm501.c @@ -123,13 +123,12 @@ static int ohci_hcd_sm501_drv_probe(struct platform_device *pdev) * regular memory. The HCD_LOCAL_MEM flag does just that. */ - if (!dma_declare_coherent_memory(dev, mem->start, + retval = dma_declare_coherent_memory(dev, mem->start, mem->start - mem->parent->start, resource_size(mem), - DMA_MEMORY_MAP | - DMA_MEMORY_EXCLUSIVE)) { + DMA_MEMORY_EXCLUSIVE); + if (retval) { dev_err(dev, "cannot declare coherent memory\n"); - retval = -ENXIO; goto err1; } diff --git a/drivers/usb/host/ohci-tmio.c b/drivers/usb/host/ohci-tmio.c index cfcfadfc94fc..16d081a093bb 100644 --- a/drivers/usb/host/ohci-tmio.c +++ b/drivers/usb/host/ohci-tmio.c @@ -227,13 +227,10 @@ static int ohci_hcd_tmio_drv_probe(struct platform_device *dev) goto err_ioremap_regs; } - if (!dma_declare_coherent_memory(&dev->dev, sram->start, - sram->start, - resource_size(sram), - DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE)) { - ret = -EBUSY; + ret = dma_declare_coherent_memory(&dev->dev, sram->start, sram->start, + resource_size(sram), DMA_MEMORY_EXCLUSIVE); + if (ret) goto err_dma_declare; - } if (cell->enable) { ret = cell->enable(dev); diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 2189c79cde5d..29ce9815da87 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -550,26 +550,13 @@ static inline void dma_free_coherent(struct device *dev, size_t size, return dma_free_attrs(dev, size, cpu_addr, dma_handle, 0); } -static inline void *dma_alloc_noncoherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp) -{ - return dma_alloc_attrs(dev, size, dma_handle, gfp, - DMA_ATTR_NON_CONSISTENT); -} - -static inline void dma_free_noncoherent(struct device *dev, size_t size, - void *cpu_addr, dma_addr_t dma_handle) -{ - dma_free_attrs(dev, size, cpu_addr, dma_handle, - DMA_ATTR_NON_CONSISTENT); -} - static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) { - debug_dma_mapping_error(dev, dma_addr); + const struct dma_map_ops *ops = get_dma_ops(dev); - if (get_dma_ops(dev)->mapping_error) - return get_dma_ops(dev)->mapping_error(dev, dma_addr); + debug_dma_mapping_error(dev, dma_addr); + if (ops->mapping_error) + return ops->mapping_error(dev, dma_addr); return 0; } @@ -720,10 +707,7 @@ static inline int dma_get_cache_alignment(void) #endif /* flags for the coherent memory api */ -#define DMA_MEMORY_MAP 0x01 -#define DMA_MEMORY_IO 0x02 -#define DMA_MEMORY_INCLUDES_CHILDREN 0x04 -#define DMA_MEMORY_EXCLUSIVE 0x08 +#define DMA_MEMORY_EXCLUSIVE 0x01 #ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr, @@ -736,7 +720,7 @@ static inline int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr, dma_addr_t device_addr, size_t size, int flags) { - return 0; + return -ENOSYS; } static inline void |